baber/WOPTO huggingface dataset:
Patent GB-484452-A (GB)
Title: Improvements in electric discharge tubes
IPC: H01J19/30
Filed: 1937-10-02
Abstract: The material of which one or more of the electrodes or other conductive parts of an electric discharge tube are made consists of an alloy of copper with 0,02-0,5 per cent of zirconium.
Patent GB-1061239-A (GB)
Title: Improvements in and relating to a transducer system
Inventor: WEICHSELBAUM THEODORE EDWIN
IPC: G01L9/00
Filed: 1964-06-29
Abstract: 1,061,239. Photo-electric measuring apparatus. BRUNSWICK CORPORATION. June 29, 1964, No. 26735/64. Heading G1A. A photo-electric transducer system, used for measuring various variable quantities e. g. weight, temperature, pressure &c., has a light source, the power supply to which is voltage regulated so that a constant light intensity is produced, and a photo-cell, having an output proportional to the area of the cell exposed to the source, with, interposed between the two, an opaque plate moving in response to variations in the quantities being measured, for varying the area of exposure of the cell. Apparatus of this kind is designed to operate in the linear region of the photo-cell, and to avoid effects due to temperature variations, increased load resistance and exposure fatigue in the detector. In one embodiment Fig. 2 (not shown), the system comprises a source (6) and a cell (7), with an apertured plate (8) located in front of the cell, the area of the cell exposed, through the aperture (9), to the source, being varied by a plate (5) attached to a blade (3) mounted on a support (1). A force F applied to the end of the blade, represents the quantity being measured and could be applied by a scale pan, for example, in weight measurements. In another embodiment Fig. 2, (not shown) the movable plate is mounted between slide guides, and can be operated for example by a bellows arrangement for pressure measurements. The circuit used Fig. 3 (not shown), includes a transformer (16), supplied through voltage stabilizing neon tubes (19, 20) from a potential source (not shown). The photocell may be a selenium or silicon cell. The potentiometers (25, 26) may be adjusted to zero the meter (15), which is a microammeter.
Patent GB-1464696-A (GB)
Title: Mixtures of azonitriles and their preparations
IPC: B01J31/02
Filed: 1975-06-24
Abstract: 1464696 Azonitrile mixtures as initiators for olefin ploymerization E I DU PONT DE NEMOURS & CO 24 June 1975 [28 June 1974] 26769/75 Heading C3P [Also in Division C2] Azonitrile mixtures having a freezing point of no more than 25 C., the azonitriles present being: (1) at least one compound of the formula (2) at least one compound of the formula and (3) at least one compound of the formula wherein R<SP>1</SP> is methyl, R<SP>2</SP> is ethyl, propyl or butyl, R<SP>3</SP> is methyl or ethyl, and R<SP>4</SP> is butyl, pentyl or hexyl, the total number of carbon atoms in R<SP>3</SP> and R<SP>4</SP> together being from 5 to 7 when R<SP>2</SP> is ethyl or propyl, and 6 or 7 when R<SP>2</SP> is butyl, or 10-85% by wt. solutions thereof in organic solvents, may be used as initiators for the polymerization of olefinically unsaturated monomers. Monomers which may be polymerized or copolymerized include ethylene, other alkenes, vinyl halides, vinyl esters, vinylidene halides, vinyl cyanides and alkenyl aromatics.
Patent GB-879921-A (GB)
Title: Method of manufacturing cams for electrical equipment, particularly switches
IPC: B26F3/10
Filed: 1959-08-05
Abstract: 879,921. Moulding thermoplastic cams. NAIMER, H. L. Aug. 5, 1959 [Aug. 18, 1958], No. 26816/59. Class 87(2). A cam for electrical equipment such as a switch is produced from a circular blank of thermoplastic material, e.g. a superpolyamide, by first cutting radially into the blank with a high speed fusion cutting disc, and then rotating the blank through the required arc to remove a portion of its periphery against the portion of the disc adjacent its periphery. A superpolyamide blank 1 is mounted with its hub 2 on a mandrel 3 and a vertical rotating disc 4 with a rough periphery is applied with moderate pressure to a portion of its rim which is thereby fused and deposited at 5 as a beard which solidifies and is broken off. The blank 1 is then rotated by handle 7 about the mandrel 3 through 30 degrees, indicated by ball 9 which registers with a groove in a disc 8, and further material is forced off around the cam periphery to produce the required profile. The disc 4 may have a smooth periphery.
Patent GB-503482-A (GB)
Title: Improvements in or relating to the manufacture of fibro-cement materials
IPC: C04B28/02
Filed: 1937-10-04
Abstract: 503,482. Fibrous cement compositions. LAMINOID PRODUCTS, Ltd., and WRIGHT, A. H. J. Oct. 4, 1937, No. 26830. [Class 70] In fibrous cement compositions the fibres consist of asbestos and sisal, manila or coir. The mix preferably comprises approximately equal quantities by volume of cement and fibres, preferably 75 per cent of which are sisal, manila or coir.
Patent GB-1007321-A (GB)
Title: Method for the polymerization of formaldehyde
IPC: C08G2/20
Filed: 1962-07-12
Abstract: Formaldehyde is polymerized or copolymerized with acetaldehyde in the presence of naphthalene-sodium as polymerization catalyst and of a solvent of the monomer(s) which is not a solvent for the (co)polymers.  The solvent may be anhydrous and polar-diethyl ether, ethylene glycol dimethyl ether, and tetrahydrofuran are specified. The polymerization may take place at below ambient temperature and under vacuum or under an inert atmosphere. Specifications 927,819 and 1,007,322 are referred to.
Patent GB-339621-A (GB)
Title: Improvements in and relating to multi-ply bags
IPC: B65D30/08
Filed: 1929-09-04
Abstract: 339,621. Triggs, W. W., (St. Regis Paper Co.). Sept. 4, 1929. [Divided on 318,527, under which a Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 5, 1929]. Paper and like bags.-A multiply bag formed from a spirally wound sheet 10, the inner end being attached to the adjacent ply at 15, is provided with a fullness or fold 14, preferably near the joint 15, to allow for the relative slipping of the plies to adjust themselves to the load. The fullness 14 may consist of a double fold.
Patent GB-207168-A (GB)
Title: Improvements in heat-accumulating electric ranges
IPC: F24C15/34
Filed: 1923-10-29
Abstract: 207,168. Widstr÷m, A. D. Nov. 17, 1922, [Convention date]. Heat-storing apparatus. - In a heat-accumulating electric range, having a water-jacket 3 surrounding a heataccumulating mass 1 and a hot-water tank 4, a pipe 7 leading from the steam space of the water-jacket arranged so that the steam heats the water in the hotwater tank without coming into direct contact therewith. The bottom part of the water-jacket and the upper part of the hot-water tank are connected by a pipe 8 fitted with a draw-off cock 9. A tank 5 supplies water to the hot-water tank.
Patent GB-449285-A (GB)
Title: Change speed gear for cycles
IPC: F16H3/083
Filed: 1935-10-01
Abstract: 449,285. Change - speed gearing. HOFER, A., Schlossberg, and MEYER, C., Obere Bahnhofstrasse, both in Rapperswil, St. Gallen, Switzerland. Oct. 1, 1935, No. 27113. [Class 80 (ii)] Change-speed gearing for pedal-drive cycles comprises toothed gears 5, Fig. 1, fast on the pedal shaft 2 meshing with gears 7 loose on a hollow countershaft 8 which drives back through a pair 9, 10 to a sleeve 10<1> carrying the usual sprocket 11. The loose gears 7 are coupled selectively to the countershaft 8 by a clutch key 12 pivoted upon a carriage 15 axially adjustable in the bore 25 of the countershaft. The key 12 is kept by a spring 20 thrust outwards through a slot 26 in the shaft 8 so as to engage alternatively with key slots 31 at the loose wheel centres. The slots 31 of the different wheels 7 are separated by spring rings 18 of circular section. The ends of the gear teeth are inclined away from one another at 40 for smoothness of running. The key 12 is held in gear position by being dovetailed at 28, 29, Fig. 4. The carriage 15 is moved to change the speed from the cycle steering column, through a cable or linkage.
Patent GB-480427-A (GB)
Title: Improvements in or relating to automatic locking devices for control valves
IPC: F16K35/00
Filed: 1937-10-06
Abstract: 480,427. Automatic locking devices for valves. MASCHINENFABRIK OERLIKON. Oct. 6, 1937, No. 27142. Convention date, Jan. 23. [Class 135] A control valve 7, 8 for controlling the supply of pressure fluid from a conduit 5 to a conduit 6, in for example, an air blast system for a circuit-breaker switch, is actuated by an electromagnet 2 and armature 12, which armature is coupled to the valve operating lever 10 by a spring-catch 13. With the catch in engaged position the valve is operated to open by energizing the electromagnet but in the event of the pressure in the line 5, which acts on a bellows 15, falling below a predetermined minimum a lever 14 is actuated by a spring 16 to trip the catch 13 and thus break the coupling between the armature 12 and the valve. lever 10 and so prevent the opening of the valve. Any other operating member for the control valve may be employed such as a pushbutton, cam-shaft, or pneumatic piston, and the coupling catch 13 may be actuated at a predetermined high pressure, instead of, or as well as, at a lowpressure.
Patent GB-876060-A (GB)
Title: Improvements in or relating to devices incorporating a barrel for the electrolytic surface treatment of articles
IPC: C25D17/22
Filed: 1958-08-25
Abstract: 876,060. Barrel plating apparatus. METAL & THERMIT CORPORATION. Aug. 25, 1958 [Aug. 26, 1957], No. 27245/58. Class 41. A metallic barrel B partly immersed in a liquid tank and receiving work W to be treated, e.g. plated, has a blade 10 extending longitudinally of and within the barrel, the blade 10 being pivoted in bearings at each end in the end walls L of the barrel, whereby the blade 10 may be pivoted about the axis of the bearings to bring the free edge of the blade into contact with the inner peripheral wall to entrap work W. The blade 10 is manually pivoted, and normally lies approximately parallel to the peripheral wall of the barrel 10, and does not interfere with movement of work along the wall. A wing nut enables the position of the blade to be set. A tray 20 is movable along tracks 21, 22 into and out of the barrel at one end to remove work tipped off the blade 10, the barrel being mounted on a driven shaft at the other end and dipping in a tank of liquid electrolyte which includes a temperature control coil and a circulator. The barrel is connected as the cathode, an anode A being supported within the barrel.
Patent GB-282529-A (GB)
Title: Improvements in or relating to automatic roll-up devices
IPC: H02G11/02
Filed: 1926-10-30
Abstract: 282,529. Bongers, A. H. Oct. 30, 1926. Roller blinds.-Relates to an automatic roll-up device of the kind comprising a spring-actuated drum or roller on which a cord or a flat sheet such as a blind is wound, a clutch being provided for holding the roller in any position and for freeing it to roll-up the blind. According to the invention, the clutch or braking-device consists of a lever, one end of which is pressed by a spring against'a flange on the roller, the other end being moved when it is required to release the roller. The device consists of a baseplate 9, Fig. 2, provided with a central pivot pin 12 on which one end of the roller is journaled, the other end being journaled on a pivot screw 13 carried by a bracket 8 fixed to the base 9. One of the end flanges, 10, of the roller consists of a metal casing containing a spiral spring having its ends fixed to the casing and to the pivot 13. The braking-device consists of a lever which has two arms 3, 5, Fig. 3, and is pivoted on a pin 1 secured to the bracket 8. The end 4 of the arm 3 is bent over and is forced into contact with the rim of the flange 10 by means of a spring 7. The other arm 5 has a pin 6 which extends through a slot in the casing that encloses the roller. By pulling the blind, the roller is rotated and the spiral spring in the casing is wound up. The roller is held, when the pull on the blind is released, by the end 4 of the lever 3. In order to roll up the blind, the roller is released by moving the pin 6 so as to raise the end of the lever 3 from the flange 10.
Patent GB-226507-A (GB)
Title: Improvements in and relating to pessaries
IPC: A61F6/08
Filed: 1924-11-15
Abstract: 226,507. Hill, W. G. Dec. 22, 1923, [Convention date]. Pessaries. - A pessary consists of a spherical body 1 of resilient material such as sponge rubber formed with a number of intersecting drainage passages 2. The device may be covered with a skin of rubber. The total area of the mouths of the passages is small relatively to the uninterrupted. area of the pessary.
Patent GB-655710-A (GB)
Title: Improvements in or relating to pneumatic tyres
IPC: B60C11/04
Filed: 1949-09-17
Abstract: 655,710. Pneumatic tyres. DUNLOP RUBBER CO., Ltd., and LACEY, B. W. D. Sept. 17, 1949, No. 27331/48. [Class 144 (ii)] A tractor wheel pneumatic tyre has a tread with circumferential ribs 1 separated by a channel, the width of which progressively increases and decreases. As shown, the ribs 1 are sinuous with a pitch of between four and five times the minimum distance between the ribs. The minimum depth of the channel, which has an undulating base 2, is between one-half and two-thirds of the maximum depth, the latter being one-half of the minimum distance between the ribs. The pitch of the undulations of the base 2 is equal to the pitch of the rib sinuations. Grooved buttresses 3 are provided at intervals around the wall of the tyre and additional load-supporting surfaces may be provided in the spaces of maximum width between the ribs 1. In an alternative construction, the two sinuous ribs may be " in phase " and separated by a straight circumferential rib.
Patent GB-603355-A (GB)
Title: Improvements relating to electric distribution apparatus
IPC: H02G5/06
Filed: 1945-10-18
Abstract: 603,355. Distribution fuse-boards and panels. HENLEY'S TELEGRAPH WORKS CO., Ltd., W. T., .and MOOR, E. Oct. 18, 1945, No. 27375. [Class 38 (i)] A distribution unit comprises a rectangular box 1 having mounted on its front 3 bus-bar and cable fittings 9, 10 respectively, arranged one above the other in pairs for bridging by fuses or links. The cable fittings extend through insulators 14 on the front of the box, said front being readily detachable from the rear portion 4, and are attached to insulators 19 mounted on the inner side of said rear portion, by bolts 34 which pass through slots 31 in a foot 27 on each fitting and have nuts 35 which are received in slots 33 in the insulators 19, each of said bolts being surrounded by a compression spring 36 interposed between its head and the foot 27 so that the fittings 10 have limited movement towards the front of the box. This movement is produced by screws 38 engaging tapped holes in a cotter-bar 39 passing through a slot in each fitting 10, said screws bearing on bushes 40 in the insulators 14 and urging a shoulder 22 on each fitting, against the underside of the said insulators so as to produce a tight seal at this point. The shoulder 22 carries a resilient washer 23. The fittings 10 may be detached from the insulators 19 by moving the bolts 34 laterally so as to disengage them from the slots 31. A cable socket 24 is provided on each fitting 10 between the insulators 14, 19, said sockets being disposed so as to prevent crossing of the cable cores 13.
Patent GB-1356084-A (GB)
Title: Electrical connections
IPC: H01H85/20
Filed: 1972-06-12
Abstract: 1356084 Fusible cut-outs LUCY & CO Ltd 7 Sept 1972 [12 June 1972] 27392/72 Headings H2G and H2E A fuse is carried by bifurcated arms 3 the fingers 5 of which are pressed together by wedge means 7, 8 to grip the fuse tags 2.
Patent GB-1169110-A (GB)
Title: Improvements in or relating to Multivibrator Type Switching Circuits
Inventor: CLAYSON KENNETH HUBERT
IPC: H03K3/286
Filed: 1967-06-14
Abstract: 1,169,110. Multivibrator. WILMOT-BREEDEN Ltd. 16 May, 1968 [14 June, 1967], No. 27400/67. Heading H3T. In a multivibrator, such as a bi-stable, having transistors 10, 11 which alternately saturate and cut off, the base current of each saturated transistor is at least five times the value required to just saturate it in the worst conditions, and the transistors have a large emitter to base capacity when saturated and have undoped emitter-base regions to prevent internal leakage of any stored charge. Discharge of the capacity when a transistor turns off is through the external base circuit. A saturation time constant of 1 Ás is achieved which is a comprise between immunity from interference and speed of switching. The circuit may be integrated. The value of the base current required to just saturate the transistor in the worst conditions is the maximum collector current of the saturated transistor divided by the minimum physically realizable common emitter current gain, and the operating base current is preferably between five and ten times this value.
Patent GB-1187309-A (GB)
Title: Improvements in Alternating Current Generators
IPC: H02J7/14
Filed: 1967-06-14
Abstract: 1,187,309. Automatic voltage control. ROBERT BOSCH G.m.b.H. June 14, 1967 [June 15, 1966], No.27402/67. Heading G3R. The output voltage of a permanent magnet generator 10 providing a D.C. supply on lines 23, 24 by way of a full wave rectifier including thyristors 18, 19, 20 is regulated by a system including oscillators 40, 41, 42, which produce firing pulses for the respective thyristors 18, 19, 20 and switching means for switching the oscillators on and off in appropriate phase relation to the commencement of the cycle of the generator alternating voltage. As shown, for oscillator 40 a voltage dependent upon D.C. output voltage variations is derived from a comparator 43 and is superimposed on a sawtooth voltage derived from one phase X by way of a capacitor 62 and resistors 59, 56 and 63; this combined voltage is compared at transistor 48 with a reference voltage derived from a Zener diode 33 and the resultant effect causes oscillator 40 to produce firing pulses for the thyristor 18, the phase angle of these pulses, relative to the cycle of alternating voltage applied to the thyristor, varying in dependence upon output voltage variations. The thyristors 19 and 20, connected to phases Z and Y of the generator, are similarly controlled by the oscillators 41, 42, whereby the D. C. output of the generator is maintained constant. The sawtooth producing circuit may be constituted by the series combination of an inductor and resistor Fig. 7 (not shown), and the oscillators may be astable multi-vibrators. One of the thyristors, e.g. 18 as shown, may have connected in parallel with it the series combination of a rectifier 30 and the normally closed contact 28 of a relay 27, the relay being connected so that the contact 28 opens when the D.C. output voltage exceeds a specific value; this arrangement allows a pulsating direct voltage to appear between lines 23, 24 when the generator is started up from rest, causing the oscillators 40, 41, 42 to oscillate and thus the thyristors 18, 19, 20 to be fired.
Patent GB-825229-A (GB)
Title: Variable stroke mechanisms
IPC: F16H21/50
Filed: 1956-09-07
Abstract: 825,229. Linkwork; converting rotary into reciprocating motion. MILTON ROY CO. Sept. 7, 1956 [Sept. 12, 1955], No. 27519/56. Classes 80 (1) and 80 (3). A variable-stroke mechanism, particularly for the plunger 11, Fig. 1, of a reciprocating pump 13 comprises a driving crank disc 24 on a shaft 23 coupled to the plunger 11 through a connecting rod 25 with ball-joints 54, 55 at its ends. The shaft 23 is rotatably supported in a frame 26 adjustable about a shaft 20, by means of a screw and nut device 34, 35 cooperating with a forked arm 37 of the frame 26, to vary the inclination of the plane of rotation of the crank disc 24. The shaft 23 and the crank disc 24 is driven from the shaft 20 through a worm 21 and wheel 22. With the posts in the position shown with the frame 26 engaging a stop 49 no motion is transmitted to the plunger 11 but as the plane of the crankdisc is inclined by rotating the frame 26 towards another stop 50 a reciprocatory motion is imparted to the plunger 11. A modified coupling, Fig. 15, between the crank-disc 224 and plunger 211 comprises a radial pin 230 secured to an arm 229 on the plunger 211 sliding in a universal bearing assembly 225 on the crank-disc 224. Alternatively the bearing assembly 225 could slidably engage a radial pin direct from the plunger 211. In the last two arrangements the plunger 211 is rotated as well as reciprocated. The adjusting frame may be pivoted about an axis other than that of the driving shaft and is selected so that during the range of stroke variation the forward position of the plunger remains substantially the same.
Patent GB-154429-A (GB)
Title: Improvements in or relating to hand tools for perforating paper, celluloid or the like
IPC: B26B25/00
Filed: 1919-11-08
Abstract: 154,429. Francis, H. Nov. 8, 1919. Perforating - machines.- A hand tool for desk use for perforating paper, celluloid, &c. consists of a serrated disk a fixedly mounted between side disks c and arranged to turn on a pivot g in a. fork composed of stampings d, but as 'shown. The shank parts e of these stampings are secured together in a flat handle f, the whole making a flat compact tool.
Patent GB-976413-A (GB)
Title: Improvements in or relating to a method and apparatus for handling wire
Inventor: LARGE JOHN
IPC: H02G11/02
Filed: 1962-07-18
Abstract: 976,413. Bobbin holders. BRITISH INSULATED CALLENDER'S CABLES Ltd. July 18, 1963 [July 18, 1962], No. 27635/62. Heading A4G. [Also in Divisions B8 and D1] A reel of wire or like material is provided with a packaging container which serves also as a support for the reel during unwinding of wire therefrom. A reel 6 of wire is mounted inside a cylindrical plastics container comprising a body portion 1 and a lid portion 2 and is supported by a central tube 7 which is spigoted into a short tube 4 extending inwardly from a hole 3 or area of weakness readily removable to leave a hole, in the base of the container. The tube 7 is provided with a shoulder 9 which fits into a recess in the reel, the shoulder 9 being so located that contact between the end flange of the reel and the inner base surface of the container is maintained. The end of the tube 7 forms or carries a guide 10 for the wire which may be withdrawn over the inner end flange of the reel and via the guide 10 and bore of the tube 7 and through the hole 3 in the base of the container. The tube and container may be made in two or more telescopic parts with releasable fastenings if desired.
Patent GB-1527725-A (GB)
Title: Slide projectors
IPC: G03B23/04
Filed: 1976-06-22
Abstract: 1527725 Slide projectors E T MALLORY and R T RITCHIE 22 June 1976 [1 July 1975] 27636/75 Heading G2J A slide projector is thrown out of focus before changing from one slide to another in order that changeover should be free of sudden changes in illumination. Defocusing is effected by a motor control of which can be manual or automatic. Slide change is automatic in response to a switch tripped by the optical system near the limit of defocusing. A slide is projected by placing it aligned with an aperture b in a plate a. The slide is held against the rear surface of plate a by rollers e the axes of which extend parallel with the top and bottom edges of the slide. The top roller is resiliently mounted so that kickers j swung by solenoid k push the slide between the rollers to lie against backplates c. A collecting arm p reciprocates behind the slide to collect it and return it to a magazine. A guide u holds the arm p clear of the slide on the arm's forward stroke. On the return stroke, a block r climbs a ramp v and tilts the arm p to catch the slide on the return stroke. A new slide is loaded for projection on the forward stroke of arm p.